75936389 has 2 divisors, whose sum is σ = 75936390. Its totient is φ = 75936388.

The previous prime is 75936373. The next prime is 75936431. The reversal of 75936389 is 98363957.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 3771364 = 8495^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 75936389 - 2⁴ = 75936373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75936319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37968194 + 37968195.

It is an arithmetic number, because the mean of its divisors is an integer number (37968195).

Almost surely, 2^75936389 is an apocalyptic number.

It is an amenable number.

75936389 is a deficient number, since it is larger than the sum of its proper divisors (1).

75936389 is an equidigital number, since it uses as much as digits as its factorization.

75936389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 50.

The square root of 75936389 is about 8714.1487822965. The cubic root of 75936389 is about 423.4641478189.

The spelling of 75936389 in words is "seventy-five million, nine hundred thirty-six thousand, three hundred eighty-nine".